__PHP_Incomplete_Class_Name wrong

Question

We\'re randomly getting some very strange error logs. They don\'t happen on every page hit, even with the same parameters/actions/etc, and they don\'t seem repeatable, each

Answer 1

This happens when we try to initialize the session before loading the class definitions for the object we are trying to save into the session.

you can use simply json methods in PHP

json_encode that array and again json_decode that array and save it in a variable and than print that variable. you will get a simple array.

eg.

$array = array(); // this is your array variable to whom you are trying to save in a session
$encode = json_encode($array);
$decode = json_decode($encode);
echo '<pre>';
print_r($decode);

it will work surely.

Answer 2

I use this function to solve this problem

$user = $_SESSION['login'];
$auth_user= fixObject($user);
function fixObject(&$object) {
   if (!is_object($object) && gettype($object) == 'object')
      return ($object = unserialize(serialize($object)));
   return $object;
}

Answer 3

When you try to unserialize a variable, php must know the structure of the object. Try to include your class before unserialize. Which class? the one that holds those properties shown in your code. include('pathtoyourclass/classname.php') or include_once('pathtoyourclass/classname.php').

Good luck!

Answer 4

Hakre's suggestion to look at session_write_close led me to what appears to be a reliable fix:

register_shutdown_function('session_write_close');

This forces the session to be written out before any memory cleanup and class unloading occurs. This is important due to a change in PHP that can result in a race condition between APC removing class references and PHP writing out the session data: http://news.php.net/php.internals/46999

Answer 5

Are you receiving this serialized object from a service/stream or reading it from a file? I've seen it happen in a client-server setting the client side object and the server side objects differ very slightly... maybe have a property that the other doesn't have. This also happens when you serialize an object, save it to file, then refactor code that removes a class and then try's to deserialize the object.

Then when it gets deserialized and tries to instantiate the needed classes they don't exist.

The error is clear and straightforward, you're creating a object for which the class has not been loaded.

I'd do a string search on your code, find where the needed class is located, and make a simple autoloader (or just a raw include/require) of the file. Just get the class it needs loaded somehow.

If the class really doesn't exist anywhere, try checking earlier revisions (I'm assuming you have version control of some type) for existence of the class. If you're deserializing an object generated by another system check that system out as well.

Answer 6

To include the class before the session_start() works fine for me. =)